Propeller



Sept. 1,1931. m 1,821,519

, PROPELLER I Filed June 12, 1929 l' atentecl S ept. 1

ETED STES' PATEN JOSEPH KOENIG, OF MANITOJVOC, WISCONSIN; REMUS KOENIG ANT) RUBY- K; ELLIS 4 ADMINISTRATORS F SAID JO$EPH' KOEN'IG, DECEASED t PR-OPELLER Application filed June 12,

This invention relates to new and useful improvements in propellers.

One of the objects of my invention is the provision of a propeller which can vbe used 5 equally as well in water or in air, and is so constructed that during the operation of the propeller, the centrifugal force of the same will expel the air or water at substantially an angle of approximately 4:53 to the intake of the air or water at the front of the propeller, thereby producing a partial vacuum between the vessel to which the propeller is attached and the volume of water or air, so as to create forward suction, imparting move ment to the vessel or object to which the pro peller is attached.

Another object of my invention is the provision of a propeller which is somewhat sim-- ilar in construction to the one illustrated in my copending application, filed March 25, 1929, 349,626, although in the present instance the propeller is not closed at the inner end and is arranged adjacent the body of the vessci or object to which the same is movably connected. The body is provided with receding portions immediately outside the propellei-s diameter, the water or air driven outwardly by the propeller forms a suction or partial vacuum on the body adjacent to the propeller as well as on the receding portion of the body on the vessel or object.

With the above and other objects in view, the invention consists in the novel features of construction, the combination and arrangement of parts hereinafter more fully set forth, pointed out in the claim and shown in the accompanying drawings wherein:

Figure 1 is a longitudinal section through a propeller constructed in accordance with my invention and illustrating its relative position with respect to the vessel to which it is attached;

Figure 2 is a sectional view on the line 2-2 of Figure 1; and

Figure 3 is a sectional view on the line 3-3 of Figure 1. 7

Referring more particularly to the drawings, 1 indicates the front wall of a vessel which may be either fiat, as illustrated in the drawings, or slightly curved. The sides of 1929, Serial No, 370,274.

the vesselarereceded as at 2- on a slight curve or angle, and the center portion 1 is preferably circular and may be of any suite ablesize withthe propeller used in connection with the vessel. of substantially the same size as the part 1; p f The central part l is formedwith a bear; ing' for supporting the inner end of the shaft 3 which is connected by means of a joiner f to the propeller shaft 5 of the vessel. E

In the construction of the propeller, I- provide a plurality of radial arms 6 which are entering between the blades and the action of the propeller will have a tendency to cause the curved portion to cut a forward path in the water or air as the same enters between the blades. Q v:

The blades are all connected adjacent their outer ends by means of the band 10 which encircles the blades and is connected by means of rivets or other suitable" fasteners to the laterally disposed lugs 11' on the outer edges of, the blades.

The inner ends of the blades are provided with laterally disposed lugs 12 which extend at right angles to the lugs 11" and are riveted or otherwise connected to a circular band 13 which extends around the propeller at the inner ends of the blades 7, and adjacent the outer edge thereof, thus the blade members are rigidly secured and retained in spaced relation with respect to each other as clearly illustrated in Figure 2.

In fastening the arms 6 to the shaft 3, the arms may be connected in any desirable manner, but in thepresent instance, I have illustrated the arms as formed integral with bands if which encirclethe shaft 3 at spaced intervals and are secured to the shaft for movement therewith in any suitable manner. The centrifugal force of the propeller will cause the water to be directed outwardly over the edges of the blades before the water reaches the fiat portion, and will be expelled to the rear over the parts 2, thus creating a vacuum around the annular portion of the parts 1 and 2, and will have a tendency to 10 create a certain amount of suction for propelling the vessel forwardly. It will be noted that by providing the receding parts 2 on the body of the vessel, it will ofier very little resistance to the medium through which the vessel is passing and at the same time have a tendency to create a vacuum for the required purpose. It will be apparent from the foregoing that I have provided a simple and inexpensive ropeller wherein the construction of the lades is such as to permit them to be manufactured at a very low cost. The construction of the device is such that the maximum results obtained from the use of the propeller is considerably greater than the propellers in use at the present time.

I claim: A propeller of the class described including a body, a shaft extending therefrom and 50 disposed in a substantially horizontal plane,

a plurality of radially extending arms arranged in spaced relation and supported by said shaft, blade members attached to said arms and arranged parallel with the shaft and extending radially therefrom, and the outer extremities of said blades all being curved in the same general direction and disposed in a plane at an angle with respect to the blades whereby the fluid through which the propeller is passing will not be impeded in its progress when entering between the blades at the forward end thereof, a band encircling the blades adjacent their .outer ends, lateral apertured lugs at the outer ,45 edges of the blades adjacent the curved ends, and means connecting the band to said lugs. In testimony that I claim the foregoing I have hereunto set my hand at Manitowoc, in the county of Manitowoc and State of Wiscousin. JOSEPH KOENIG. 

